I have always loved the response of N/A engines but looking at the costs/hp ratio Im seriously thinking about a supercharger setup (SOS or kraftwerks). Im wondering of how the drivability is going to change vs a N/A setup. I know people say response is almost N/A. How close to N/A is it though?

Also since the engine has to spin the supercharger as well Im guessing there is a heavy flywheel feel to it, maybe like having the A/C on. Is this effect noticable, and can it be mitigated with a lighter flywheel/clutch combo?

Thanks

 

I had a Kraftwerks setup @ 10psi with 355whp. The car has more power everywhere through the power band. I have an ap2 so i went with an ap1 flywheel while i had the clutch out. Figured might as well since it was out. But I can tell you the car revs like a rocket. Definilty no lag.

 

You will not loose any throttle response time. The car will feel the same just with much more power everything where in the rpm range

 

Just make sure and run a after cooler, no fmic or you will lose all that response. A lightweight flywheel is a great compliment as well as a larger TB for engine/throttle response with or without the SC.

 

Since i have to upgrade the clutch I am definitely putting an act 8.8lb flywheel in there before the supercharger install. i was leaning towards the kraftwerks youtune because I read its more reliable but it comes with a fmic. Should I run the SOS with the aftercooler (Novi 1200)?

 

YES without a doubt.

 

YES without a doubt.
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Reliable enough to run on the track without any worries?

I like your setup and I too was thinking that I would need a stronger diff. The Ap1 wont last very long Im guessing...

 

YES without a doubt.
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Reliable enough to run on the track without any worries?

I like your setup and I too was thinking that I would need a stronger diff. The Ap1 wont last very long Im guessing...
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Replace the Diff when it breaks. Little point in tossing it to the side now. It could last you a couple months or a couple years. But yes the ap2 has stronger bearing end caps and that's typically the first place that gets stressed first on these diffs. You could do a little preemptive work and replace them with some upgraded Comptech caps. Should help prolong the life. Not sure how much they cost though. Sometimes it cheaper just to run it till it breaks and replace with a used unit or move to something entirely different. I've chosen the path at replacing with used when needed. Ive broken two ap1 diffs but not an ap2 yet. Currently on the Ap2.

Yes SOS is a nicely put together and reliable kit. I recommend you get the upgraded heat exchanger if your going to track it. It will help keep your AIT better in check. Your tune is going to dictate a lot of its reliability as well as your boost level.

 

Hello;

I think that you are on the right track with either the SOS or KW kits. I have a friend that has the SOS kit and loves it. I've had my KW kit since April of 2009 and have more than 13,000mi on the kit. I am the original owner of the car...it is a 2006...and do not feel that it has lost ANY response at all with the supplied fmic (at least on this KW kit). I have also not had any issues with this kit to date. This kit is very quiet compared to the SOS kit. The Paxton blowers are a bit more "whiney" compared to the Rotrex units. Either kit is a great kit. The only benefit of the SOS kit (IMHO) is that it is capable of more power with the 1200 series blower. Feel free to see the links in my signature for more details.I also have had a CC 11.5lb FW and did not like it as it seemed to chatter a bit under light engagement. I have since replaced it with an AP1 14lb OEM unit and feel that the driveability is much better and has much smoother engagement.

Good luck.

Brian

 

The guys above are 100% right. A supercharger drives exactly like stock, until you stomp it and the car lunges forward like a rabid dog. I drove mine daily and it was always just like having a faster version of the same car. I had the SOS with Novi 1200 and it was great being able to keep turning up the boost until I hit Ludicrous Speed. It really just depends on what you want though. The KW setup is probably better for daily driving around town, because it makes more torque down low. But for the track or for a weekend car you want to drive hard, SOS. (And if you want both, look at the TTS rotrex kit.) I don't think the flywheel will make much of a difference, to be honest.